Scanguage 2 odd kw reading after new cam and porting

[ozscott]

Hi all. 4.0. I used to see as high as 160kw at 5500 which is believable as the 140 odd factory figure was a bit lower in the revs from memory. Just had head work and Crow cam 2 up in aggressiveness from stock... It now says 221kw at the same revs...

I know it's got more grunt but of course it has nowhere near 221...what gives? I also now ha e a sequential LPG system and wondered if it has changed something

Cheers

[460cixy]

You won't have a clue what it's making till you put it on the rollers

[clubagreenie]

I wouldn't rust it for reading that. While I had one and it was great, there's no way to estimate Kw/Nm without a direct test. I plugged mine into the supra, and at 10,000rpm had 5000Kw when in reality was a mere 550.

[ozscott]

Thanks fellas - I get that it isnt accurate and I assume its just using pre-programmed parameters in terms of throttle position switch, rpm and fuel and air flow, BUT it was pretty accurate before in terms of the LR claimed kw and the reading on the gauge...what is now odd is that it is so far out and I dont know why. Perhaps the air flow is out of stock parameters due to the cam and and it cant handle it?

Cheers

[clubagreenie]

Not only would I not rust it I wouldn't trust it either!

[101RRS]

BUT it was pretty accurate before in terms of the LR claimed kw and the reading on the gauge

Well not really from your earlier post you said you were reading 160kw from an engine that maxs out at 140kw at 4750rpm (when new and now much less) and in all reality at 5500rpm is well below 140kw - most likely somewhere around 120kw at those revs so the scangauge was rather inaccurate to start with - probably over reading by 30%.

Garry

[ozscott]

You might be right although my (High Comp') engine was still pulling hard at the cut out at 5,500 - maybe it was the manual trans, but it was going harder than at 4,700 odd...so I assumed it was still building KW from 4700 odd (where it showed 140kw on the guage...) onwards.

If I am wrong and new it wasnt producing more than 140kw even at 5,500, then it was much closer to realistic than it is now. The question remains, which I suppose there is no answer likely, why is she giving me readings of over 200kw?

Cheers

[101RRS]

Unfortunately scangauge only reads out what the ECU is telling it. You Hi Comp 4.0 may have been pulling a bit more horses than normal.

I was surprised that your scangauge was able to tell you power output in kw - the one I had fitted to my RRS TDV6 only gave the power being generated as a % of power available not an absolute figure.

I think the only real way to determine the benefits is on a dyno.

Garry

[Dougal]

Where do you find this kw reading? My scangauge II (albeit about 5 years old now) doesn't seem to have one. I can get load in percentage, that's essentially a percentage of torque available at the current rpm.

[ozscott]

Thanks Gary.

The kW setting is in guage and from memory it was part of the extended x-guage.... Mines quite a few years old. Have a look at the scan gauge Web sites. Mine says Kw.

Cheers